Work-holder for metal-working machines



(NO Model.) 2 Sheets-Sheet 1. L. OOSGROVE.

. WORK HOLORR FOR METAL WORKING MACHINES.

NO. 316,526. Patented Apr. 28, 1885.

J; /-'-r-"-' wrrmzssas: F F Z INVENTOR: ,4 LEUEERIIIVE.

I I Attorney.

N. PEIERS. Phulo-Lilhognphm. Washinglun. D. c.

2 SheetsSheet 2.

L. COSGROVE.

WORK HOLDER FOR METAL WORKING MACHINES. No. 316,526.

(No Model.)

Patented Apr: 28, 1885.

INVENTOR:

LAWRENCE EEIEERUVE.

WITNESSES:

Attorney.

N. PETERS, Phomuhn n nor. Washin ton. D. C.

, UNirEn STATES P TENT tl EicE.

LAWRENCE .GOSGROVE, 0E BALTIMORE, MARYLAND.

WORK-HOLDER FOR METAL-WO RKlNG MAGHENES.

' SPECIFIQATION forming part of Letters Patent No. 316,526, dated April28, 1835.

Application tiled September 1, 1884.

To all whom it may concern:

Be it known that I, LAWRENCE COSGROVE,

a citizen of the United States, residing at Baltimore, in the State of Maryland,haveinvented certain new and useful Improvements in Machine-Chucks, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to improvements in Vises for metal-planers, millingmachines, drillpresses, &c., and the objects of which are to provide and arrange mechanism by which the work to be operated on may be presented at different or desired angles to the tool, and also thattwo adjustments may be accomplished at right angles to each other. I attain these objects by mechanism illustrated iuthe accon1- panying drawings, in which- Figure l is a top view of the device, showing the horizontal adjustment by dotted lines; Fig. 2, a side view showing the vertical adjustment by dotted lines; Fig. 3, a rear view; Fig. 4, a'sectional View through the axes of the pivoting-point of the frame with the bar in full; Fig. 5, an opposite end view to Fig. 3, and Fig. 6 a topview with parts removed.

Similar letters refer to similar parts throughout the several views.

The letter A designates the bed-plate, which is circular in form, the periphery of which has graduated marks, by which the vise may be accurately and conveniently adjusted to any angle from a given point in a horizontal position by placing the dial-mark b at the desired angle designated by the graduated mark, and it is provided with an oblong projection, is, on its under surface, which tits in slots in the bed-plate of the machine to which the device may be attached, thereby preventing it from shifting its position thereon, and also a circucular projection, k, on its upper surface that projects into a circular recess in the under side of the plate B, and attached thereto by the screw 12, as shown in Fig. 4. By this construction the plate B is accurately centered on the bed-plate A, and permitted to turn thereon.

To the bed-plate A is attached, in the manner as above "stated, the plate B, which consists of a plate corresponding in diameter to (N0 model.)

that of the bed-plate A, provided with the dialmark b on its periphery. and on its upper surface with a projection or lug, g, through which passes a round bar, 0. of suitable metal. with its ends projecting from either side of the lug 9, thereby forming two trunnions, on which the vice proper is vertically adjusted. he bar a is secured to the lug g by being driven into a hole bored therein, thereby securely holding it in its place. One end is provided with radial graduation marks, by which, in connection with the dial-mark n, the desired incline or angle of the frame 0 is acquired.

The frame 0 is provided with clamp ug-jaws (I, one of which is stationary and the other movable, the latter being held to the frame 0, and its movements guided thereon by the projections m, fitted to and sliding in the slots 19.

The jaw is actuated by the screw 6, secured to the frame 0 by passing through the lug 0, and having collars c placed on each side of the lug, said collars being secured to the screw, one

of which may be integral therewith, or in case a cap is used a recess turned in the screw will answer the same purpose. The threaded end of the screw 6 is threaded into the jaw d, and

the opposite end made square to receive a crank-handle, by which it is operated and the movablej aw actuated accordingly, whereby the work is clamped between or released from the jaws. From the under side of the frame 0 project two lugs, f, which form bearings around the bar a, and on which the frame pivots, the same being bored out to correspond with the diameter of the bar 0, and provided with slots h and binding-screws t, passing through the projection r, and threaded into the frame, by which the same is securely held to the trunnions formed by the bar 0, when it is placed at the desired angle by tightening the screws 2', which draw the projecting portions 0' toward the frame, the slot h permitting the same, thereby firmly clamping the two together.

In attaching the frame 0 to the plate B, the projection g of the latter is placed between the lugs f, with the holes placed opposite to each other. The bar 0 is then placed in the hole "of one of the lugs, and driven into that ofthe projection g, and partly through the same into the hole of the opposite lug. The screws 1' being withdrawn or released to allow the bar 0 to easily pass through the holes in the, lugs f, the sizeof -Which--they govern,-and which, when the bar a is in position, are replaced or tightened up to hold the frame at the desired angle, as above stated.

This vise when attached to various .rnachines may be used for a number of pui'poses such' as drilling holes at various angles, forming angularsurfaces, making cutters, 8m.

The device is operated as follows: The screws i are slightly withdrawn, which permits the bearings f to expand,andthereby release their grip on the bar 0,, by.. whic,h, the frame 0 may be placed at any angle froma horizontal to avertical plane, and when so placed the screws t are screwed up, which contract'the slotted bearings f, causing them to regrip the bar a, and securely holdfthegframe O thereto. By placing the dial-mark w to an angle designated by the graduation-mark on the bar 0 the work clamped in the vise will then be presented tothe tool accordingly,

' thereby conveniently and accurately determining the angle; and in case 'it-is desired to above stated.

Having fully described my invention, what I claim, and wish to secure by UnitedStates Letters Patent, is Q 1. In a vise for metal-working.mflfihinery,

the frame 0, provided with suitablegrippingjaws, -in combination .with mechanism, substantially as shown, by which the bearings f 0 of the frame 0 are clamped and held to the bar 0, whereby the frame 0 may be placed and held at any angle from a horizontal to a vertical plane, asherein set forth.

- is moved at right angles to its vertical adjustment.

4. The combinatiomwith the frame O, of the trunnions c, bearings f, providedwith the slots h, and binding-screws't', as herein shown and set forth. 7

5. The combination of the frame O, having a vertical adjustment, the base B, 'thebaseplate A, pivoted to the base B, thereby forming a horizontal adjustment, and bothadjustments provided with suitable graduationsand dial-marks, whereby any given angle may be presented to the cutting tool or drill either in a horizontal or vertical plane.

In testimony whereof I affix my signature in presence of two witnesses.

"LAWRENCE GOSGROVE. Witnesses:

WM. BrNELSON, G. A. BOYDEN. 

